Genome wide analysis of DWARF27 genes in soybean and functional characterization of GmD27c reveals eminent role of strigolactones in rhizobia interaction and nodulation in Glycine max

Rehman, Naveed Ur; Abbas, Farhat; Imran, Muhammad; Alam, Intikhab; Ullah, Ihteram; Riaz, Muhammad Waheed; Khan, Fahim Ullah

doi:10.1007/s11033-022-07127-4

Cited by 5 publications

(1 citation statement)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the biosynthetic genes D27 , CCD7 , and CDD8 are specifically expressed in the vasculature of noninoculated roots, whereas upon perception of rhizobial lipochitooligosaccharides, expression is also found in the epidermis and in dividing cells of nodule primordia as well as in the meristem and the distal infection zones of mature nodules (van Zeijl, Liu, et al., 2015). Silencing of MtD27 in M. truncatula did not modify or only slightly increased the number of nodules (van Zeijl, Liu, et al., 2015), whereas the GmD27c knockdown in Glycine max (soybean) reduced it (Rehman et al., 2022) as well as the GmMAX3 knockdown while its overexpression enhanced the nodule number (Haq et al., 2017). The first indications of the strigolactone action site in pea suggested that the negative impact of the strigolactone biosynthesis ccd8‐ deficient mutant on the number of nodules was due to a decrease in infection thread formation (McAdam et al., 2017).…”

Section: Introductionmentioning

confidence: 99%

Strigolactones repress nodule development and senescence in pea

Van Dingenen,

De Keyser,

Desmet

et al. 2023

The Plant Journal

View full text Add to dashboard Cite

SUMMARYStrigolactones are a class of phytohormones that are involved in many different plant developmental processes, including the rhizobium–legume nodule symbiosis. Although both positive and negative effects of strigolactones on the number of nodules have been reported, the influence of strigolactones on nodule development is still unknown. Here, by means of the ramosus (rms) mutants of Pisum sativum (pea) cv Terese, we investigated the impact of strigolactone biosynthesis (rms1 and rms5) and signaling (rms3 and rms4) mutants on nodule growth. The rms mutants had more red, that is, functional, and larger nodules than the wild‐type plants. Additionally, the increased nitrogen fixation and senescence zones with consequently reduced meristematic and infection zones indicated that the rms nodules developed faster than the wild‐type nodules. An enhanced expression of the nodule zone‐specific molecular markers for meristem activity and senescence supported the enlarged, fast maturing nodules. Interestingly, the master nodulation regulator, NODULE INCEPTION, NIN, was strongly induced in nodules of all rms mutants but not prior to inoculation. Determination of sugar levels with both bulk and spatial metabolomics in roots and nodules, respectively, hints at slightly increased malic acid levels early during nodule primordia formation and reduced sugar levels at later stages, possibly the consequence of an increased carbon usage of the enlarged nodules, contributing to the enhanced senescence. Taken together, these results suggest that strigolactones regulate the development of nodules, which is probably mediated through NIN, and available plant sugars.

show abstract